1201044243 has 12 divisors (see below), whose sum is σ = 1862844360. Its totient is φ = 686310912.

The previous prime is 1201044241. The next prime is 1201044259. The reversal of 1201044243 is 3424401021.

It is not a de Polignac number, because 1201044243 - 2¹ = 1201044241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1201044241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4085038 + ... + 4085331.

It is an arithmetic number, because the mean of its divisors is an integer number (155237030).

Almost surely, 2^1201044243 is an apocalyptic number.

1201044243 is a deficient number, since it is larger than the sum of its proper divisors (661800117).

1201044243 is an equidigital number, since it uses as much as digits as its factorization.

1201044243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170386 (or 8170379 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1201044243 is about 34656.0852232332. The cubic root of 1201044243 is about 1062.9667225291.

Adding to 1201044243 its reverse (3424401021), we get a palindrome (4625445264).

The spelling of 1201044243 in words is "one billion, two hundred one million, forty-four thousand, two hundred forty-three".